Teaching EMRS PGT Mock Test 2023 Quantitative Aptitude Probability

A bag contains 7 blue, 4 red, 6 black and 3 white balls. A ball is drawn from this bag, without looking into it. Then, probability of getting a black or a blue ball is : 

1
\(\frac{10}{20}\)
2
\(\frac{11}{20}\)
3
\(\frac{13}{20}\)
4
\(\frac{14}{20}\)
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